Stone-cutter s chisel



(No Model.)

T. WOODS.

v STONE GUTTERS CHISEL.

No. 329,872. Patented Nov. 3, 1885.

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V 1 a T"; J 1 1% s l I E v2 .2r 6? J A INVENTUH ATTEET Nrrn STATES arnnrl s STONE-CUTTERS CHISEL.

:BPECIFZCATION forming part of Letters Patent No, 329,872, datedNovember 3, 1885,

Application filed May 4, 1885.

To ctZZ whom, it may concern:

Be it known that I, THOMAS Woons, a citizen of the United States,residing at N icholasville, in the county of Jessamine and State ofKentucky, have invented certain new and useful Improvements inStone-Cutters Chis els, of which the following is a specification.

Myinvention relates to a stone-cutters chisel or tool and it consists inthe combination with a suitably-tempered steel bar or rod composing thechisel-bit, of a longitudinally bored or slotted Wooden stock and abatteringhead projecting beyond the top of said stock, the bit beingadapted to be protruded from said stock and successively sharpened whenworn by cutting away the wood composing said stock, all as hereinafterfully described.

In the accompanying drawings, Figure 1 is an elevation of myimprovement, showing an etching tool or bit mounted in a bored andslitted wooden stock with rings or ferrules thereon for firmly securingthe bit in place and preventing the splitting of the wooden stock. Fig.2 is a central vertical section of the same, showing the hammering-headin position in the top of the tool, part of it being broken and insection to show the socket. Fig. 3 is a transverse section on line mFig. 1. Fig. 4 is a similar view on line y y, Fig. 2. Fig. 5is anelevation of my improvement, showing a fiat steel chisel mounted in aslotted wooden stock with ferrules thereon. Fig. 6 is a central verticalsection of the tool on line at 00', Fig. 5, showing the flat face of thechiselbar in elevation and its hammering-head in sectional elevation.Fig. 7 is atransverse section on line y 1/, Fig. 5, showing the tool asbeing round in cross section throughout.

Fig. 8 is a similar view showing the tool as being elliptical incross-section at that portion in its length covered by the chisel-bar.

A represents the stock or handle of the tool, which is preferably madeof wood, and tapered from its head to the cutting end. It is centrallybored, and is provided a portion of its length from said cutting end upwith a narrow slit, a.

B B are ferrules fitting upon the stock, and O is a bar or rod oftempered steel composing the cutting-bit of the tool.

In Figs. 1, 2, 3, and 4 I have shown the bit as being a round andtapering one, and

driven into the central bore of the stock with its point projectingslightly therefrom. The bore at the head or hand part of the stock is oflarger diameter in cross-section than in the remainder of the stock,toaccommodatea battering-pin, D, which receives the blow of the workmanshammer or mallet. A socket, d, may be provided at thelower end of pinD,to fit upon the top of round bit 0, which projects slightly upwardbeyond the narrow bore of the stock. When the bits 0 are of flat chiselshape, as shown in Fig. 5, 6, 7, and 8, they are set into slots of likeconfiguration made in the stock.

I have shown the chisel-bit in Figs. 5 and 6 as being tapered both inthe width and thickness, which is of the preferred form, as it fits moresnugly in its coincident slot in said stock. 7

The battering-pin in Figs. 5 and 6, for the flat cutting chisel,isprovided with a head, D, at its upper end, for receiving the blows ofthe hammer, and a transverse slot, d, at its lower end, for engaging thetop of the chiselblade.

It is obvious that the bits 0 could be continued upward to projectbeyond the top of the stock and the battering-pins dispensed with; but Iprefer the use of a battering-pin in connection with the stock and bit,as it economizes in the use of material composing the bit, and it can berepeatedly used with other bits when their predecessors have been wornaway.

In fitting the parts of my tool together when the round bit is used, theferrules are first tightly driven into their proper relative positionson stock A. Then the bit is driven into place in the bore of the stockwith its point projecting a suitable distance therefrom for service.Then the battering-pin is driven firmly in place into its receptacle atthe top of the stock. In fitting the parts together when a flat bit isused, the bit is first placed in its slot in the stock, with thebattering-pin driven in place above it,and then the ferrules are firmlyset into position on the stock to prevent its splitting.

In the operation of my tool the blows of the mallet or hammer have atendency to tighten the ferrules on the stock, and thereb securely bindall the parts together. When the bit becomes dulled by use, it issharpened by grinding, and as the material thereof Wears away by saiduse and grinding, the ferrules are removed one by one from the lower endof the stock upward, and the wood cut-away sufficient to permit aportion of the bit to project from the stock. When the lowermost of woodor other similar material, of the battering-pin D, driven into place inthe upper part of the bore of said stock immediately above bitO,substantially as herein set forth. 25

3. In astone-cutters chisel,the combination, with bit 0 and the woodenincasing handle or stock A, of the ferrules B, substantially as hereinset forth.

4. The combination, in a stone-cutters chi's- 3o el,of the bit O,woodenincasing stock or handle A, battering-pin D, driven into place at thehead of said stock, in the bore thereof, immediately above the bit 0,and the ferrules 13, substantially as herein set forth. 3 5

In testimony of which invention I have hereunto set my hand.

THOMAS woons.

WVitnesses:

FRANK DEERING, DEWITT O. SHELY.

